21142103110 has 16 divisors (see below), whose sum is σ = 38114616096. Its totient is φ = 8443767808.

The previous prime is 21142103083. The next prime is 21142103119. The reversal of 21142103110 is 1130124112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142103119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627387 + ... + 1640326.

It is an arithmetic number, because the mean of its divisors is an integer number (2382163506).

Almost surely, 2^21142103110 is an apocalyptic number.

21142103110 is a deficient number, since it is larger than the sum of its proper divisors (16972512986).

21142103110 is a wasteful number, since it uses less digits than its factorization.

21142103110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268367.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21142103110 its reverse (1130124112), we get a palindrome (22272227222).

The spelling of 21142103110 in words is "twenty-one billion, one hundred forty-two million, one hundred three thousand, one hundred ten".